I'm not trying to be obtuse here, but I truly don't see that an extra quarter inch or even half of an inch in limb width is going to make a bow less maneuverable in brush. My MAII BW is 64" long and at its wides point, the limbs are 1 3/4" at end of riser and taper down to 3/4" at the nock tips. Never had a problem in brush with it, not even with a bow quiver.
However, I'd guess you would like a bow like the Shrew or Griffin or one of those with small risers---their limbs look narrower to me, but it may be an optical illusion.
Joe